Flow-Admission Control Based on Equality of Heterogeneous Traffic (Two-Type Flow Model)

2010 ◽  
Vol E93-B (12) ◽  
pp. 3564-3576 ◽  
Author(s):  
Sumiko MIYATA ◽  
Katsunori YAMAOKA
Keyword(s):  
Admission Control ◽  
Flow Model ◽  
Heterogeneous Traffic ◽  
Type Flow

Study of the Response of PW Traffic Flow Model to a Bottleneck on a Circular Road and its Suitability for Heterogeneous Traffic Conditions

2021 ◽  
Vol 9 (4) ◽  
pp. 460-463
Keyword(s):  
Fluid Flow ◽  
Traffic Flow ◽  
Flow Model ◽  
Equation Model ◽  
Heterogeneous Traffic ◽  
Flow Conditions ◽  
Flow Models ◽  
Traffic Conditions ◽  
Model Response ◽  
Traffic Flow Models

The traffic flow conditions in developing countries are predominantly heterogeneous. The early developed traffic flow models have been derived from fluid flow to capture the behavior of the traffic. The very first two-equation model derived from fluid flow is known as the Payne-Whitham or PW Model. Along with the traffic flow, this model also captures the traffic acceleration. However, the PW model adopts a constant driver behavior which cannot be ignored, especially in the situation of heterogeneous traffic.This research focuses on testing the PW model and its suitability for heterogeneous traffic conditions by observing the model response to a bottleneck on a circular road. The PW model is mathematically approximated using the Roe Decomposition and then the performance of the model is observed using simulations.

scholarly journals UPLINK POWER BASED ADMISSION CONTROL IN MULTI-CELL WCDMA NETWORKS WITH HETEROGENEOUS TRAFFIC

2008 ◽  
Vol 1 ◽  
pp. 115-134 ◽  
Author(s):  
Sami A. El-Dolil ◽  
A. Y. Al-Nahari ◽  
Moawad I. Desouky ◽  
Fathi El-Sayed Abd El-Samie
Keyword(s):  
Admission Control ◽  
Heterogeneous Traffic

scholarly journals B&W Call Admission Control for Multimedia Communication Networks

2019 ◽  
Vol 7 (6) ◽  
pp. 52-58
Author(s):  
Lain-Chyr Hwang ◽  
San-Yuan Wang
Keyword(s):  
Signal Processing ◽  
Admission Control ◽  
Communication Networks ◽  
Communication Systems ◽  
Call Admission Control ◽  
Multimedia Communication ◽  
Heterogeneous Traffic ◽  
The Other ◽  
Call Admission ◽  
Signal Processing Systems

In the multimedia communication networks providing quality of service (QoS), an interface between the signal processing systems and the communication systems is the call admission control (CAC) mechanism. Owing to the heterogeneous traffic produced by diverse signal processing systems in a multimedia communication network, the traditional CAC mechanism that used only one CAC algorithm can no longer satisfy the aim of QoS CAC: Utilize the network resource to the most best and still satisfy the QoS requirements of all connections. For satisfying the aim of QoS CAC in the multimedia communication networks, this study proposed an innovative CAC mechanism called black and white CAC (B&W CAC), which uses two CAC algorithms. One of them is called black CAC controller and is used for the traffic with specifications more uncertain, which is called black traffic here. The other is call white CAC controller and is for the traffic with clearer specifications, which is call white traffic. Because white traffic is simple, an equivalent bandwidth CAC is taken as the white CAC. On the other hand, a neural network CAC (NNCAC) is employed to be the black CAC to overcome the uncertainty of black traffic. Furthermore, owing to more parameters needed in a QoS CAC mechanism, a hierarchical NNCAC is proposed instead of the common used NNCAC. Besides to accommodate more parameters, a hierarchical NNCAC can keep the complexity low. The simulation results show the B&W CAC can obtain higher utilization and still meet the QoS requirements of traffic sources.

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